Sunset review also known as expiry review, these are reviews that the Authorities are required to undertake at five-year intervals with respect to outstanding countervailing duty and anti-dumping duty orders. Regulations of WTO Anti-dumping Agreement requires that countervailing duty and anti-dumping duty orders be revoked, and suspended investigations be terminated, within five years from the date of collection, or from the date of the most recent administrative review involving dumping and injury reviews. Sunset review decides whether the anti-dumping or countervailing should continue to be in force, raise duties or terminate. Therefore, actively participate in sunset review is an important measure to make the products go back to foreign market, is also a key to a turnaround for anti-dumping determination.Huamei can represent Chinese exporters for responding to all questionnaires in the whole procedure, specially including:Respond to initiation of sunset review within the time limit; fill in and submit the lawsuit questionnaires; submit case briefs or rebuttal briefs.